The role of vitamin D in the age of COVID-19: A systematic review and meta-analysis.
Roya GhasemianAmir ShamshirianKeyvan HeydariMohammad MalekanReza Alizadeh NavaeiMohammad Ali EbrahimzadehMajid Ebrahimi WarkianiHamed JafarpourSajad Razavi BazazArash Rezaei ShahmirzadiMehrdad KhodabandehBenyamin SeyfariAlireza MotamedzadehEhsan DadgostarMarzieh AalinezhadMeghdad SedaghatNazanin RazzaghiBahman ZarandiAnahita AsadiVahid Yaghoubi NaeiReza BeheshtiAmirhossein HessamiSoheil AziziAli Reza MohseniDanial ShamshirianPublished in: International journal of clinical practice (2021)
This study found that most of the COVID-19 patients were suffering from vitamin D deficiency/insufficiency. Also, there is about three times higher chance of getting infected with SARS-CoV-2 among vitamin-D-deficient individuals and about five times higher probability of developing the severe disease in vitamin-D-deficient patients. Vitamin D deficiency showed no significant association with mortality rates in this population.